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I tried, but after 30 seconds of looking at a blank white screen and "loading from didtheyreadit.com" (or whatever the name is), I (the human, not a program) timed out and hit the bak button. There's a limit to how much I'll do, even for science.

I discoverd the same thing. They are doing something tricky: they just keep sending data. They keep sending data to you do something else. This way they know for how long you read the message, which is about the same time their program ran.

So, this is even more diabolical than I thought! They are also sucking bandwidth. Imagine a company deciding to use this (the intended market, I'm thinking), and that another company gets a lot of email from them. That is almost a denial-of-service attack! Lots o

Some companies who provide "ad campaign" services do this. Helps them track who reads what, and what email addresses are valid, and get rough geographical info on the reader/address. I once was speaking with a guy who owns an "ad campaign" service and he said they find that some people will bounce SPAM, but still read the email. Then, they know that even though a bounce came back, someone read the mail and the email is considered valid.

"Phone Home" for email. I dunno, not sure I would trust a service from